* {
    margin: 0;
    padding: 0;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

html, body {
    width: 100%;
    height: 100%;
    color: #FFFFFF;
    background-color: #000000;
}

input, .editable {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    background-color: #303030;
}

div {
    width: 100%;
    text-align: center;
}

button {
    /* display: block; */
    width: 80%;
    height: 1.5em;
    line-height: 1.5em;

    font-size: 1em;
    font-family: serif;
    text-align: center;
    color: #FFFFFF;
    background-color: #404040;
    border: 0.1em solid #FFFFFF;
    border-radius: 0.5em;
}
button:hover {
    background-color: #202020;
}
button:active {
    background-color: #101010;
    transform: translateY(0.1em);
}

a {
    text-decoration: none;
}

table {
    margin: 1em auto;
    border-collapse: collapse;
}

td {
    height: 1.5em;
    line-height: 1.5em;
    text-align: center;
    border: 1px solid #606060;
}